Slow BT Downloads on Synology Download Station through OpenWRT Router

Since flashing my TP-Link router with OpenWrt, I've noticed BT downloads on my Synology NAS were dead slow or non-starters. The Synology Download Station requires uPnP / NAT-PMP which OpenWRT does not have enabled by default. Simple Fix I was discouraged from enabling uPNP and NAT-PMP by the OpenWRT Wiki so decided to add static port forwarding to OpenWRT firewall instead. After port forwarding...